Electronic switching telephone system



Jan. 17, 1961 B. BRIGHTMAN EI'AL 2,968,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 1 LOCAL OFFICE LONG LONG LONG DISTANCE DISTANCE DISTANCE 4-- 4-- I SWITCHING SWITCHING SWITCHING CENTER CENTER CENTER LOCAL LOCAL LOCAL OFFICE OFFICE OFFICE I l 4 LOCAL LOCAL OFFICE OFFICE INVENTORS BARRIE BRIGHTMAN THEODOR FRANKEL ROBERT K. KAYE ATTORNEY Jan. 17, 1961 B. BRIGHTMAN ETAL ELECTRONIC SWITCHING TELEPHONE SYSTEM 104 Sheets-Sheet 3 Filed May 21, 1959 26f CONTROL CONNECTOR TAC-D CONTROL 26b CONNECTOR FIG 38 F. R o T s h m D E W F CONTROL"A" FIGS 60-68 CALLING TERMiNATING TIME STORE TIME STORE FIGS 48-50 FIGS 69-?! Jan. 17, 1961 B. BRIGHTMAN EIAL 2,968,699

' ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 4 CONTROL CONNECTOR FIG. 3B

INCOMING REGISTER DMI 2 lNCOMlNG TWO men 3555???? FIGS. 83-88 FDA F|Gs 4M2 CALLING TIME STORE FIGS. 48-50 REGISTER FINDER FIGS. 43-44 Jan. 17, 1961 B. BRIGHTMAN EI'AL ELECTRONIC SWITCHING TELEPHONE SYSTEM 104 Sheets-Sheet 5 Filed May 21, 1959 SEIN 6 RC6 n u r 424 CONTROL CONNECTOR FIG 38 42b POSITION REGISTER FIVE DIGIT STORE FIGS 5I-59 CONTROL"B" FIGS 12-79 POSITION TIME STORE FIGS 80-82 Jan. 17, 19 61 B. BRIGHTMAN ETAL 2,963,699

ELECTRONIC SWITCHINGTELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 6 34 I- RTSI I 34b ROUTE RELEASE SELFOR I AMER CONTROL I CONNECTOR I l RTSI I RING TRIP 5 g SCANNER RTSN 340 i i ROUTE SELECTOR CIRCUIT RRB I FlGS.89-|IO RELEASE RRC I DETECTOR RM J RTB RING TRIP RTC DETECTOR TR LINK ALLOTTER F|GS.ll|-ll3 Jan. 17, 1961 B. BRIGHTMAN ETAL 2,968,699

ELECTRONIC swrrcnmc TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 7 LINK CONNECTOR FIGS. ll4-II6 CALL FINDER FIG. I25

POSITION COUPLING CIRCUIT FIG.I24

LINK CIRCUIT FIGS.ll7-I23 KEYBOARD CIRCUIT FIGS. l26-I27 FIG.2F

Jan. 17, 1961 B. BRIGHTMAN ETAL 2,968,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 8 AUDIO AMPLlFIER-AUA FIG.3A FIG.3B

AUDIO AMPLIFIER-AUE l2 --l2 I2 FIG.4A H545 AUDIO AMPLIFIER-AUG AUG FIG.5A FIG.5B

BLOCKING OSCILLATOR GATE-BOG BOG c Jan. 17, 1961 B. BRIGHTMAN ETAL 7 2,968,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 11 HIGH SPEED INVERTER -ING INVERTER-INK 2 F|G.22A FIG.22B F|G.23A F|G.23B

INVERTER-INS 1 INVERTER-INU FIG.26A

EQUALIZER -LAB LAB Jan. 17, 1961 s. BRIGHTMAN ETAL 2,963,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet l2 MONOSTABLE MULTIVIBRATOR MAA l2 MAA D c g g A) A B 0* I00 Ms l F|G.28A

HOLD MMD NEGATIVE A as |0B HOLDING OVER PULSES +|2 +|2 FIG.29A FIG.29B

HIGH SPEED AMPLIFIER- PUH 3004 PUH FIG.3OA FIG-30B PUJ Jan. 17, 1961 B. BRIGHTMAN ETAL 2,958,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 13 HIGH SPEED AMPLIFIER-PUM H PUM A B c A B T 0 c -12 FIG.32A FIG.32B

INTEGRATOR TRIGGER-STA STA B 0- INT A F|G.33A

FLN

B LPF A J, c FIG.34A FIG.34B

PHASE SPLITTER-APA -|2 APA A 0 HA \J C Jan. 17, 1961 Filed May 21, 1959 104 Sheets-Sheet 14 TIME POSITION 8I HIGHWAY ASSIGNMENT HIGHWAYS TIME SLOT l 2 3 4 5 5 Ho LOCAL TRKs. LocAL TRKS. LocAL TRKS. LOCAL TRKS. LOCAL TRKS. LocAL TRKS.

l-IO II-2o 2I-30 3I-4o 4I-5o 5l-60 SERVICE LINE sERvIcE LINE SERVICE LINE sERvIcE LINE I 0| O2 O3 04 sPARE SPARE H8 L.D. TRKS. L.D. TRKS. L.D. TRKS. L.D. TRKS. L.D. TRKS. L.D. TRKS.

I-I7 l8-34 35-5I 52-68 69-85 86-IOO 29 L E T.A. T.A. T.A. T.A. T.A.

TRK.GRF!7 VTRKGRRQ TRK.GRP. 3 TRK.GRP. 4 TRK.GRP. 5 TRK GRP 5 TAPE T.A. BUSY MARK BUSY MARK 3o ANNouNcER SPARE sPARE I ES TRKS TRK GRP B TRK GRF2 9 SERVCE N LocAL UNASSIGNED j 32 TEST FIG.36

104 Sheets-Sheet 15 BOG 3702 B. BRIGHTMAN ETAL FLN LINE TERMINATING UN|T Jan. 17, 1961 Filed May 21, 1959 I|\[ mwkflowmioswkwa Him 0* 1 M 4 D P I R S 3TH A 6 w .i N 3 b n. A A H H W I a a D D x WI 3 E E KA KA B 3 C F LG LG B P B c C B C F- W L P F A B U B R m L 6 O 2 m w w F A. 3 E 3 M B M I /A W C G C G N F C O S S T hr L P C G E U G E I I T B A T o F L L MU... K.A 6 n n KA 7 N B O 6 L L A 3 m M B D M B D M N w0 l W91! 1 F GE 0 H AM H A L 4 P Tfi C G G O L u E m wow wuwm m B P O O T T E u n h n u u u m V. A A C 7 2 52)) D E 3 3 Q C G c G l S I E G 6 OF 7 B A G OW V 1 A B K A B KA E D F. w L w L m m H E a o w E a D R c 8 m 1. A m NU A 8 wu o $2.65 0h m m 8% 3 FIG.38

Jan. 17, 1961 B. BRIGHTMAN ETAL 2,963,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 16 SElZE SIGNAL DETECTOR C-SD TO CONTROL CONNECTOR A FOR SEIZE DET.

TO REGS 8 LINK CCTS.

H II D GGA FOA

FOR SEIZE DET.

FIG.39

SEIZE DETECTOR mhuo x2: wiwm hm mwmm OPJPm CONTROL CIRCUIT Jan. 17, 1961 B. BRIGHTMAN ETAL 2,968,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheetl? TO INC. REG. '0 D.D. REG. T0 SLOT T0 CONTROL w J O F g o E V U EU & P 8609 B Pa T/ w T F 5% A A 008 G 4 E w H 0 g: 6 m m n o w m B A m m O 4 4 4 G G 4 O FD G G A 4 NE A B A A J N. I m A m F. A I. A A 0 o m f F 4 ac RU ,8 CB A C 4 m 7 R D 2 A D l 2 6m C M N J A w W- R G W I I 4 A A A G B B B C GR 6 A R EE 1 2 A G E RTD N J GA T l C C I G T V NwR w D L W TC D GR w CR C EE G E R B RT c T LI A N .O 0 w 05 TA GEN L E0 A FSC Jan. 17, 1961 B. BRIGHTMAN ETAL 2,968,699

ELECTRONIC SWITCHING TELEPHONE SYSTEM Filed May 21, 1959 104 Sheets-Sheet 18 Tg I m FROM SCANNE/B GENERATOR TO INC.

l DDF I EGJ XI:

I STAGE l I I Gc s A I I I GJD INA I l I D A e A B A I I E I I I 4|Ol 4|O3 I J l i I l I I I 4|O4 0 E I I I I 4Io5 G I I I l I 66A B A FIA I I I A C%eeA l I I 4 I 4l08 I I I; I 2 i I I I A GGA I I I I Q 7 I I STAGE N I I A GJD B II I I I I I I I I 4|O9 I I I c s I ----I I GGA I I I 4|O6 A l I l I B I I I I C B I .I I ew GGA l I I I A A 4H0 I I I I I l B INA I I I I ALARM I I I l A I l I I I I B I I l Q7 l. I I J L. I

Z O O E o c a I} TO INC. Y A TOINC. REG.| A REG.N OR OR 00 REG.| 0 D'REG.N

T0 SEIIZE DETECTOR FlG.4|- I CONTROL CIRCUIT REGISTER ALLdTTER Jan. 17, 1961 B. BRIGHTMAN EFAL 2,968,699v

ELECTRONIC SWITCHING TELEPHONE SYSTEM 104 Sheets-Sheet 20 Filed May 21, 1959 T0 SCANN ER GENERATOR STAGE N MANUAL RESET TO REGISTER N REGISTER I FIG.43

REGISTER FINDER 

